#include<iostream>
#include<cstring>
using namespace std;
const int N = 310;
int arr[N], s[N];
int f[N][N];
int n;	
int main()
{
	cin >> n;
	memset(f, 0x3f, sizeof(f));
	for (int i = 1; i <= n; i++) {
		cin >> arr[i];
		s[i] = s[i - 1] + arr[i];
		f[i][i] = 0;
	}
	for (int len = 2; len <= n; len++) {
		for (int l = 1; l + len - 1 <= n; l++) {
			int r = l + len - 1;
			for (int k = l; k < r; k++) {
				f[l][r] = min(f[l][r], f[l][k] + f[k + 1][r] + s[r] - s[l - 1]);
			}
		}
	}
	cout << f[1][n] << endl;
	return 0;
}